Auxiliary air-inlet device for internal-combustion engines.



L. T. RHOADES. AUXILIARY AIR INLET DEVICE FOR INTERNAL COMBUSTIONENGINES.

APPLICATION FILED 0017,1913.

Patented Apr. 7, 191% I mw'wto'r- Lewis I. Rhea/c295 @Xhm amen JNlTEDSTATE Tl @FFICE.

LEWIS T. RHOAIbES, F MONT CLARE, I ENNSE-ZLVANIA, ASSIGNOR TO NEW YORKCOIL COMPANY, (3F NEW 'YGE K, Fol. Y.

AUXiLIABY AIR-INLET DEVICE FOE-"t INTERNAL-COMBUSTION ENGINES.

aoeases.

Application filed October *1, 1913.

To all whom it may concern 1' 4 Be it known that I, LEWIS T. Ri-ioAous,a citizen of the United States, residing at Wont Clare, in the county ofMontgomery and State of Pennsylvania, have invented certain new anduseful improvements in .luxiliary Air-inlet Devices for internal-Qombustion Engines, of which the following is a specification. 4

My invention relates to improvements in auxiliary air-inlet devices forinternal com hustion engines, an object of the invention being to admitair into the intake of the engine between the carbureter and thecylinders in such proportions as to give increased power and speedwithout increasing fuel consumption.

A further object is to increase the volume of air drawn into thecylinder in order that the compression within the cylinders will behigher than would be the case if my 6" vice were not employed especiallywhen throttle supplying gas to the engine is only partly opened.

A further object is to provide a device of the above nature which inayhe installed without boring or defacing the inlet pipe or manifold ofthe engine to which it is tached and of such simple construction thatthe most unskilled operator may readily apply the device withoutresorting to boring or machine work, of any nature.

A further object of the invention is to supply device of the characterdescribed, which can be very cheaply manufactured, namely, punched outby means of the con-- vent-ional punch press from sheet material withoutresorting to castings or other or pensive operations- I A further objectof the invention is my novel valve arrangement, which can be operatednot only to increase the eihciency of the engine, but by a secondmovement may be caused to give a very large opening to the outer air andthus cause the cylinders to cease firing entirely, as this extremely lare opening will allow pure air to enter the cylinders instead of gas, notonly cooling the cylinders, but also acting as an eiiicient brake tohold the car in check when descending grades.

A further object of the invention is im proved means whereby one valveserves the double purpose of admitting a fixed quancos 5a tit; of air insmall proportions and a. second hereinafter described and pointed out inthe Patented Apr. '7, 1914.

Serial in. 793,799.

movement admiis a very large volume of air with means that will enablethe operator to use either the small quantity or the large quantity atwill, and at the same time prevent the improper operation of said valve.

With these and other objects in View, the invention consists in certainnovel features of construction and combinations and arrangements ofparts as will be more fully claim the accompanying drawings: Figure 1 isview in elevation illustrating my impr ements. Fig. 2 is a view inlongitudinal sec on on the line 2-2 of Fig. 1 showing in full lines thevalve in closed position, and in dotted lines in open position, and Fig..3 is a view in elevation showing one of the plates orming the airchamber removed to illuswithin the air chamber. ts a carburetor of anyordinary and 2 an intake pipe adapted to to thecyiinders of the engineBetween the carburetor 1 and the intake pipe 2, my improved device islocated, and takes the place of the ordinary gasket or washer used atthis point. The bolts3 and nuts a. used as clamping means between thecarburetor and the intake are utilized to .....nip my improved device inposition, and hence F; can install my device without-altering theconstruction of the engine in the. slightest, except to remove theordinary washer and replace it with my improvements.

My improved device comprises a plurality oi? metal sheets which arestamped forming three blanks or plates 5', 6, and 7. All o-i theseplates are of the some external shape and are secured together by rivets8. The intermediate plate or blank 6 is'formed ".itli a relatively largeopening 9 which when the plates are secured together, forms an elongatedair chamber 10. All of the plates have openings 11 in one end for thereception of one of the bolts 3, and a perforated spacing block 12 issecured to the outside plates 5 and bridges the air chamher. This block12 has its opening 13 registering with openings in the plates 5 and 7 toreceive the other of said bolts 3 and allow the device to be clampedfirmly in place without contracting the air chamber.

The device projects at one end to one side of the carburetor, and isprovided-on plate trated, but ll am of course, not limited to anyparticular number of these openings.

A relatively small coiled spring 23 is located around the stem 15, andbears at one end against the sleeve 14, and at its other end against aWasher 24 held on the stem bymeans of a transverse pin 25. Around theoutside of the relatively coiled spring 23, a relatively large coiledspring 26 is located, and. this spring 26 bears at one end against theend of sleeve 14, but at its other end terminates short of the washer24. In other Words, when the valve 19 is'in closed positionagainst'plate 5, the end of spring 26 will be spaced from the Washer 24:a dis tance substantially equal to the thickness of the intermediateplate 6, sothat the valve is free tomove in a direction to open aportion of its movement Without bringing into operation the spring 526as will he more fully hereinafter explained,

While myinvention is not limited to any articular means for operatingthe valve, 1

ave "illustrated an ordinary foot treadle 27 connected by a flexibledevice 28 with the bent end 29 of stem 15 by means of a .crew 30, sothat when the pedal is operated, the stem'wili he moved in one directionagainst the action of the springs.

It will he noted that when the valve i9 is moved away from plate 5, thatair can enter through the openings 22 into'the air chamberll), and flowthrough this air chamher into the air intake pipe, commingling withthegas in. its passage to the cylinders. The openings are so proportionedthat when the valve is moved to open position, just the proper quantityoi air Will be admitted to bring about the best results. This move mentof the valve -for ordinary admission of air is resisted solely by therelatively small spring 23. If it is desired to admit a large quantityof air, as for example, when coasting or at'any other time, cause thecylinders to cease firing, an excessive pull on the stem 15 against theaction of the relatively large spring 26, will move the valve 19entirely out of the opening 18 in plate 7, so that an inlet, the fullcapacity of the opening 18, is provided through which the air may bedrawn into the cylinders, cooling the cylinders and also acting as asufiicient brake to hold the car in check when descending grades. Thetwo springs 23 and 26 therefore havemliiferent functions. Thefirst-named is to resist the normal opening movement of the valve and toreturn the valve to closed position, While the larger spring 26 onlycomes into operation when the valve is drawn outwardly beyond normal,assumingnormal. to he the ordinary inlet of air for the ordinary runningof the engine. T he spring 26 will be of suflicient strength to requirea considerable pressure to move. the valve to its extreme open position,so that the operator cannot accidentally admit too much air, yet candesignedly do so whenever desired.

Various slight changes might be made in the general form and arrangementof parts described without departing from my invention, and hence I donot limit myself to the precise details set forth, but consider myselfat liberty to make such changes and alterations as fairly fall withinthe spirit and scope of the appended claims.

Having thus described my invention, wl it I claim as new and desire tosecure by Letters Patent is:

1. Means for admitting air to internal combustion engines, comprising anair chain her having an opening in its Wall, a valve movable in saidopening and seated against the inner wall of the chamber at the oppositeside of the chamhcr, said. valve having perforations therein throughwhich air is admitted to the chamber when the valve is drawn away fromthe inner wall. thereof, and means pcrmittino the valve to be drawnentirely out-of the nrst-mcntioned opening to admit an abngnrmalquantity of air, substantially as described. I

2. Means for admitting air to internal combustion engines, comprising anaircha1n-- her having an opening; in its Wait, a valve movable in saidopening and seated against the inner wall of the chamber the oppo siteside of the chamber, said alve having perforations therein through whichair is admitted to the chamber when the valve is drawn away from theinner wall thereof, a stem on said valve, two coiled. springs on thestem, one longer than the other, and a shoulder onthestein against whichthe longer spring hears and against which the larger spring is broughtinto contact when the valve is moved to a position to be drawndescribed.

Means for adimtting air to internal combustion engines, comprising anair chain-- her having an opening in its wall, a valve m0 able in saidopening and seated against the inner wall of the chamber at the oppositeside of the c iamher, said. valve having perforations therein throughwhich air is admitted to the chamber when the valve is drawn away fromthe inner wall thereof, a stem on said valve, two coiled. springs on theout of the said opening, substantially as.

stem, one longer than the other, a shoulder on the stem against whichthe longer spring bears and against which the larger spring is broughtinto contact when the valve is moved to a position to be drawn out ofthe said opening, and meanspreventing rotarymovement of the stem,substantially as de- I scribed. v

A. device of the character described, comprising an air inlet chamberadapted to be positioned between a carburter and an intake pipe, andhaving openings in'its opposite walls registering with both saidcarbureter and said intake pipe, said chamber having an air inletopening in its wall, and a spring held perforated disk controlling thepassage of air throu h said inlet, and

said disk adapted to be rawn entirely out of the opening in the wall,substantially as described.

5. A device of the character described, comprising three plates rivetedtogether andof uniform external contour, said intermediate plate havinga relatively large opening forming an elongated air chamber, saidoutside plates having registering openings adapted to register with theoutlet of a carbureter and the end of an intake pipe respectively whensaid device is clamped between},

a pertorated spring held valve positioned in said opening, substantiallyas described.

7. A @device of the character described, comprising three plates rivetedtogether and of uniform external contour, said intermediate plate havinga relatively large opening forming an elongated air chamber, saidoutside plates having registering openings adapted to register with theoutlet of a car- 7 bureter and the end of an intake pipe respectivelywhen said device is clamped between the carbureter and the intake pipe,oneof said outside'plates having an air inlet opening thergin, aperforated disk valve in said opening, a stem' secured to the valve andprojecting through the other of said outside plates, and a spring onsaid stem normally holding the disk valve against the lastmentionedplate, substantiallygias described.

8. A device of the character described, comprising three plates rivetedtogether and of uniform external contour, said intermediout of theopening in the wall, substantially ate plate having a relatively largeopening forming an elongated air chamber, said out-- side plates havingregistering openings adapted to register with the outlet of a carbureterand the end of an intake pipe respectively when said device is clampedbetween the carbureter and the intake pipe, one of said outside plateshaving an air. inlet opening therein, a perforated disk valve in saidopening, a stem secured to the valve and rojecting through the other ofsaid 'outsi e plates, two coiled springs on said stem, a shoulder on thestem against which one of said coiled springs normally bears and againstwhich the other of said coil springs bears when further movement in thesame direction is imparted to the stem, substantially as described.

9.' A device of. the character described comprising an air chamberhaving an opening at one end to communicate with the intake pipe of aninternal combustion engine,

said airchamber having a valve receivin opening, a valve fitting said.opening, an having openings therein, and means for moving the valvethrough the opening and entirely out of theopening, substantially asdescribed.

.-10. A device of the character described,

comprising an air inlet chamber adapted to communicate with the intakeof an engine, said chamber having an opening in one wall,

' a valve fitting said open1ng,a spring adapted to press said valveagainst the opposite wall of the chamber, and said valve having airinlet openings therein through which air will enter the chamber when thevalve is" drawn away from the last-mentioned wall, and said valveadapted to be drawn entirely out of the opening in the wall,substantially as described. i v

11. A device of the character described, comprising an air inlet chamberadapted to communicate with the intake of an engine,

said chamber having an opening in one wall. 1

avalve fitting said opening, a spring adapted to" press said valveagainst the opposite l wall of the chamber, said valve having air inletopenings therein through which alr will enter the chamber when the valveis'1 5 drawn away from the last-mentioned wall,

and a second spring resisting the opening action of the valve to drawthesame entirely as described. 12. A device of-the character described,comprising an air inlet chamber adapted to communicate with the intakeof an engine, said chamber having an opening in one wall, a valvefitting saidopening, a spring adapted to press said valve against theopposite wall of the chamber, said valve having air inlet openings.therein through which air will enter the chamber when the valve is drawnaway from the last-mentioned wall, a

second spring resisting ihe opening action of I In testimony whereof Ihave slgned my the valve '50 draw the same entirely out of name to thisspecification in the presence of the opening in the Well, said springsboth m0 subscribing Witnesses.

positioned around a stem secured to the LEWIS T. RHOADES; valve, and thelast-mentioned spring shorter Witnesses:

than the flee-mentioned spring, substan- JOI-IANNA G. SGHMILAN,

tially as described. l R. F, DENNIS.

